CN101387769A - Display device - Google Patents
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- CN101387769A CN101387769A CNA2008102131238A CN200810213123A CN101387769A CN 101387769 A CN101387769 A CN 101387769A CN A2008102131238 A CNA2008102131238 A CN A2008102131238A CN 200810213123 A CN200810213123 A CN 200810213123A CN 101387769 A CN101387769 A CN 101387769A
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- translucent cover
- bonding agent
- display device
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- 239000000758 substrate Substances 0.000 claims abstract description 94
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 28
- 239000007767 bonding agent Substances 0.000 claims description 78
- 239000008393 encapsulating agent Substances 0.000 claims description 21
- 239000000853 adhesive Substances 0.000 abstract description 38
- 230000001070 adhesive effect Effects 0.000 abstract description 38
- 238000007665 sagging Methods 0.000 abstract 1
- 229910004438 SUB2 Inorganic materials 0.000 description 22
- 101100311330 Schizosaccharomyces pombe (strain 972 / ATCC 24843) uap56 gene Proteins 0.000 description 22
- 101150018444 sub2 gene Proteins 0.000 description 22
- 102100036464 Activated RNA polymerase II transcriptional coactivator p15 Human genes 0.000 description 17
- 101100224481 Dictyostelium discoideum pole gene Proteins 0.000 description 17
- 101000713904 Homo sapiens Activated RNA polymerase II transcriptional coactivator p15 Proteins 0.000 description 17
- 101150110488 POL2 gene Proteins 0.000 description 17
- 229910004444 SUB1 Inorganic materials 0.000 description 17
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 101150046160 POL1 gene Proteins 0.000 description 3
- 101100117436 Thermus aquaticus polA gene Proteins 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 229920003217 poly(methylsilsesquioxane) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133311—Environmental protection, e.g. against dust or humidity
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
- G02F1/133562—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the viewer side
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/50—Protective arrangements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/28—Adhesive materials or arrangements
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A display device according to the invention is provided with: a liquid crystal display panel having a first substrate, a second substrate provided on the viewer side of the above described first substrate and a liquid crystal layer sandwiched between the above described first substrate and the above described second substrate; and a transparent cover pasted on the surface of the above described liquid crystal display panel on the above described viewer side using an adhesive. The above described liquid crystal display panel has a polarizing plate between the above described second substrate and the above described transparent cover. The above described adhesive covers the entirety of a side of the above described polarizing plate, and the form of the outer periphery of the above described adhesive in a plane is uneven. Therefore, a transparent cover is pasted on a display panel according to which inconsistencies resulting from expansion of the polarizing plate in the vicinity of an end portion caused by moisture can be prevented, and the adhesive can be prevented from sagging when the display panel and the transparent cover are pasted together.
Description
Technical field
The present invention relates to translucent cover be sticked on the lip-deep display device of display panel by bonding agent.
Background technology
As display device, the known liquid crystal display device that for example has display panels.The situation that disposes translucent cover such as acrylic resin for example in observer's one side (front one side) of this display panels is more.This translucent cover has the effect of cover sheet (cover plate).But, dispose because this translucent cover and display panels are spaced a predetermined distance from, thus between translucent cover and the display panels across air layer.Therefore, with the interface of this air layer on, owing to the difference of refractive index causes unnecessary boundary reflection, become to make to show the contrast main reasons for decrease.
In order to address this problem, the technology of pasting translucent cover with bonding agent on the surface of display panels has been proposed.Figure 11 is the cut-open view of the structure of the existing liquid crystal display device of explanation.
It is bonding that display panels shown in Figure 11 makes the first substrate SUB1 and the second substrate SUB2 carry out via encapsulant SL, becomes the structure that accompanies liquid crystal layer LC between the first substrate SUB1 and the second substrate SUB2.And, dispose polaroid POL1 in the side opposite of the first substrate SUB1 with liquid crystal layer LC, dispose polaroid POL2 in the side opposite of the second substrate SUB2 with liquid crystal layer LC.
On the surface of observer's one side of this display panels, be pasted with translucent cover COV via adhesive A DH.On translucent cover COV, photomask BLK is arranged in the arranged outside of the viewing area of display panels AR.And, when adopting as adhesive A DH with the approaching bonding agent of the refractive index of translucent cover COV, then can be across air layer, therefore can prevent from the unnecessary boundary reflection that causes owing to refractive index difference from can improve the contrast of display degree.
In addition, as the prior art that the present invention relates to, except existing structure shown in Figure 11, patent documentation 1, patent documentation 2 below for example also having.
[patent documentation 1] TOHKEMY 2007-178758 communique
[patent documentation 2] TOHKEMY 2006-221187 communique
Summary of the invention
Figure 12 is the cut-open view of the problem points of explanation existing liquid crystal display device shown in Figure 11.Under the situation of existing structure shown in Figure 11, the end of the end of adhesive A DH and polaroid POL2 is consistent substantially, therefore the side that can expose polaroid POL2.Its result, as shown in figure 12, moisture immerses from the side of polaroid POL2, produces near the such problem that expands in end of polaroid POL2.
At this moment, translucent cover COV is general thicker than the second substrate SUB2.Therefore, because near the stress that expands and produced the end of polaroid POL2, translucent cover COV deforms hardly, and near the end of the second substrate SUB2, the second substrate SUB2 can deform to the first substrate SUB1, one side projection.The thickness of adhesive A DH is thin more, and this distortion is remarkable more.Because this distortion, the uneven area I RG in gap of variation has taken place in the bed thickness that produces liquid crystal layer LC.If the uneven area I RG in this gap arrives in the AR of viewing area, then produce and to see for example uneven such problem of demonstration of the frame shape of yellowing.
In addition, in patent documentation 1, patent documentation 2,, disclose bonding agent and stretched out and cover structure till the side of polaroid from polaroid though do not disclose near the problem that expands the end of this polaroid.
But, under the situation of the such structure of patent documentation 1, patent documentation 2, in occurrence positions when skew when at bonding translucent cover and display panels, bonding agent then can take place stretch out and drip such problem from the substrate (the second substrate SUB2 that is equivalent to Figure 11) of upside.
In addition, Figure 11 does not consider the protection of the driving circuit after on the first substrate SUB1 driving circuit being installed in patent documentation 1, patent documentation 2 described structures.When covering being installed in driving circuit on the display panel with translucent cover, the slit appears between translucent cover and driving circuit, therefore might produce when pushing zone that driving circuit is installed or its when neighbouring translucent cover such problem of breaking.
In addition, Figure 11 is in patent documentation 1, patent documentation 2 described structures, as adhesive A DH, can make by the irradiation of light at the bonding agent etc. that adopts ultraviolet hardening bonding agent for example, have thermohardening type and this two side's of ultraviolet hardening character under the situation of bonding agent of its curing, also have following problem: translucent cover COV with photomask BLK overlapping areas in, be difficult to make adhesive A DH full solidification.
In addition, these problems are not limited to adopt the liquid crystal display device of display panels, but the problem that in the display device that has adopted other forms of display panel, also might take place.
Other problems beyond the above-mentioned problem are come clear and definite by present specification whole record and accompanying drawing.
As an example of display device of the present invention, for example, being used for that translucent cover is sticked on bonding agent on the display panel, the whole side of polaroid is covered.At this moment, the flat shape of bonding agent periphery adopts concaveconvex shape.
As other examples of display device of the present invention, for example, come the driving circuit that is installed on the display panel is covered with translucent cover.At this moment, make and also accompany bonding agent between translucent cover and the driving circuit.
As the other example of display device of the present invention, for example,, on the photomask of translucent cover, form opening in advance adopting irradiation can make the bonding agent conduct of its curing be used for translucent cover is sticked under the situation of the bonding agent on the display panel by light.
Structure of the present invention for example, can be as described below.
(1) a kind of display device comprises:
Display panels, this display panels have first substrate, are configured in second substrate of observer's one side with respect to above-mentioned first substrate, are clipped in the liquid crystal layer between above-mentioned first substrate and above-mentioned second substrate; And
Translucent cover, this translucent cover are secured at by bonding agent on the surface of above-mentioned observer one side of above-mentioned display panels,
Wherein, above-mentioned display panels has polaroid between above-mentioned second substrate and above-mentioned translucent cover,
Above-mentioned bonding agent is covered with the whole side of above-mentioned polaroid,
The flat shape of above-mentioned bonding agent periphery is a concaveconvex shape.
(2) in (1), can adopt following structure:
The thickness range of the above-mentioned bonding agent between above-mentioned translucent cover and the above-mentioned polaroid is 30～200 μ m,
The amount that above-mentioned bonding agent exposes from the profile of above-mentioned polaroid is even in the place of minimum, also more than 0.1mm.
(3) in (1), can adopt following structure:
The thickness range of the above-mentioned bonding agent between above-mentioned translucent cover and the above-mentioned polaroid is 30～100 μ m,
The amount that above-mentioned bonding agent exposes from the profile of above-mentioned polaroid is even in the place of minimum, also more than 0.1mm.
(4) in any one of (1)～(3), can adopt following structure:
Above-mentioned display panels is set at the position that surrounds the viewing area, has the encapsulant of bonding above-mentioned first substrate and above-mentioned second substrate,
The end of above-mentioned polaroid and above-mentioned encapsulant are overlapping.
(5) in any one of (1)～(3), can adopt following structure:
Above-mentioned display panels is set at the position that surrounds the viewing area, has the encapsulant of bonding above-mentioned first substrate and above-mentioned second substrate,
The end of above-mentioned polaroid is positioned at the side than the more close above-mentioned viewing area of above-mentioned encapsulant.
(6) in any one of (1)～(5), can adopt following structure:
Above-mentioned first substrate is equipped with driving circuit in the zone of stretching out from above-mentioned second substrate,
Above-mentioned translucent cover is covered with above-mentioned driving circuit,
Between above-mentioned translucent cover and above-mentioned driving circuit, also has above-mentioned bonding agent.
(7) in any one of (1)～(6), can adopt following structure:
Above-mentioned translucent cover has photomask in the zone that above-mentioned driving circuit is installed,
Above-mentioned bonding agent is the bonding agent that can make its curing by the irradiation of light,
Above-mentioned photomask has opening on the part in the zone that above-mentioned driving circuit is installed.
(8) in any one of (1)～(7), can adopt following structure:
Above-mentioned translucent cover has the function of touch panel.
(9) a kind of display device comprises:
Display panels, this display panels have first substrate, be configured in than second substrate of more close observer's one side of above-mentioned first substrate and be clipped in above-mentioned first substrate and above-mentioned second substrate between liquid crystal layer; With
Translucent cover, this translucent cover are secured at by bonding agent on the surface of above-mentioned observer one side of above-mentioned display panels,
Wherein, above-mentioned display panels has polaroid between above-mentioned second substrate and above-mentioned translucent cover,
Above-mentioned bonding agent is covered with the whole side of above-mentioned polaroid,
Above-mentioned first substrate is equipped with driving circuit in the zone of stretching out from above-mentioned second substrate,
Above-mentioned translucent cover is covered with above-mentioned driving circuit,
Between above-mentioned translucent cover and above-mentioned driving circuit, also has above-mentioned bonding agent.
(10) in (9), can adopt following structure:
Above-mentioned translucent cover has photomask in the zone that above-mentioned driving circuit is installed,
Above-mentioned bonding agent is the bonding agent that can make its curing by the irradiation of light,
Above-mentioned photomask has opening on the part in the zone that above-mentioned driving circuit is installed.
(11) in (9) or (10), can adopt following structure:
The flat shape of above-mentioned bonding agent periphery is a concaveconvex shape.
(12) in any one of (9)～(11), can adopt following structure:
The thickness range of the above-mentioned bonding agent between above-mentioned translucent cover and the above-mentioned polaroid is 30～200 μ m,
The amount that above-mentioned bonding agent exposes from the profile of above-mentioned polaroid is even in the place of minimum, also more than 0.1mm.
(13) in any one of (9)～(11), can adopt following structure:
The thickness range of the above-mentioned bonding agent between above-mentioned translucent cover and the above-mentioned polaroid is 30～100 μ m,
The amount that above-mentioned bonding agent exposes from the profile of above-mentioned polaroid is even in the place of minimum, also more than 0.1mm.
(14) in any one of (9)～(13), can adopt following structure:
Above-mentioned display panels is set at the position that surrounds the viewing area, has the encapsulant of bonding above-mentioned first substrate and above-mentioned second substrate,
The end of above-mentioned polaroid and above-mentioned encapsulant are overlapping.
(15) in any one of (9)～(13), can adopt following structure:
Above-mentioned display panels is set at the position that surrounds the viewing area, has the encapsulant of bonding above-mentioned first substrate and above-mentioned second substrate,
The end of above-mentioned polaroid is positioned at the side than the more close above-mentioned viewing area of above-mentioned encapsulant.
(16) in any one of (9)～(15), can adopt following structure:
Above-mentioned translucent cover has the function of touch panel.
(17) a kind of display device comprises display panel and is secured at the lip-deep translucent cover of observer's one side of above-mentioned display panel by bonding agent,
Wherein, above-mentioned translucent cover has photomask,
Above-mentioned bonding agent is the bonding agent that can make its curing by the irradiation of light,
The opening that the above-mentioned photomask of above-mentioned translucent cover has the window of the viewing area of exposing above-mentioned display panel and is arranged on above-mentioned window position in addition,
The above-mentioned opening of at least a portion of above-mentioned bonding agent and above-mentioned photomask is overlapping.
(18) in (17), can adopt following structure:
Above-mentioned display panel is equipped with driving circuit at least on one side,
Above-mentioned translucent cover is covered with above-mentioned driving circuit,
Between above-mentioned translucent cover and above-mentioned driving circuit, also have above-mentioned bonding agent,
The above-mentioned photomask of an above-mentioned avris in the above-mentioned photomask of above-mentioned translucent cover, that above-mentioned driving circuit is installed has above-mentioned opening.
(19) in (17) or (18), can adopt following structure:
Above-mentioned display panel is a display panels.
(20) in (17)～(19), can adopt following structure:
Above-mentioned translucent cover has the function of touch panel.
Said structure is an example all the time, and the present invention can carry out suitable change in the scope that does not break away from technological thought.In addition, the example of structure of the present invention beyond the said structure is come clear and definite by present specification whole record and accompanying drawing.
The representational effect of the present invention is as described below.
According to the present invention, to be used for that translucent cover is sticked on the whole side that bonding agent on the display panel covers polaroid, near the therefore expansion the polaroid end that can prevent to cause and the demonstration that causes is inhomogeneous by moisture.In addition, be concaveconvex shape by the flat shape that is used on display panel the bonding agent periphery of pasting translucent cover, can prevent bonding agent drippage when bonding.
In addition,, covering with translucent cover under the situation that is installed in the driving circuit on the display panel, also accompanying bonding agent between translucent cover and the driving circuit, can prevent when having pushed translucent cover that translucent cover from breaking by making according to the present invention.
In addition, according to the present invention, adopting the bonding agent that can make its curing under the situation of the bonding agent of pasting translucent cover on the display panel,, therefore bonding agent is fully solidified because on the photomask of translucent cover, be formed with opening as being used for by the irradiation of light.
The records whole by instructions come clear and definite other effects of the present invention.
Description of drawings
Fig. 1 is the cut-open view of the embodiment 1 of explanation display device of the present invention.
Fig. 2 is the stereographic map of an example when illustrating in the present invention, making display panel and translucent cover bonding.
Fig. 3 is the vertical view of an example of the translucent cover among explanation the present invention.
Fig. 4 is the vertical view of an example of the flat shape of explanation bonding agent.
Fig. 5 is the vertical view of an example of the flat shape of explanation bonding agent.
Fig. 6 is the vertical view of an example of the flat shape of explanation bonding agent.
Fig. 7 is the cut-open view of the embodiment 2 of explanation display device of the present invention.
Fig. 8 is the cut-open view of the embodiment 3 of explanation display device of the present invention.
Fig. 9 is the cut-open view of variation of the embodiment 3 of explanation display device of the present invention.
Figure 10 is the cut-open view of the embodiment 4 of explanation display device of the present invention.
Figure 11 is the cut-open view of the structure of the existing liquid crystal display device of explanation.
Figure 12 is the cut-open view of the problem of explanation existing liquid crystal display device shown in Figure 11.
Embodiment
With reference to accompanying drawing embodiments of the invention are described.In each figure and each embodiment,, and omit explanation to identical or the similar identical symbol of inscape mark.
[embodiment 1]
Fig. 1 is the cut-open view of the embodiment 1 of explanation display device of the present invention.Fig. 2 is the stereographic map of an example when illustrating in the present invention, making display panel and translucent cover bonding.Fig. 3 is the vertical view of an example of the translucent cover among explanation the present invention.
At this, be that example describes as the situation of display panel to adopt display panels.As shown in Figure 1, display panels for example comprises the first transparent substrate SUB1 and the second substrate SUB2 of the insulativity that is made of glass etc.And the first substrate SUB1 and the second substrate SUB2 carry out bonding via encapsulant SL.Between the first substrate SUB1 and the second substrate SUB2, accompany liquid crystal layer LC.Encapsulant SL is formed on the periphery in the outside of the viewing area AR of display panels, thereby surrounds this liquid crystal layer LC.In Fig. 1, the second substrate SUB2, one side is observer's one side (front one side).In the present embodiment, the thickness of the first substrate SUB1 and the second substrate SUB2 is 0.3mm, and liquid crystal layer LC thickness is 4 μ m, but is not limited thereto.
On the AR of the viewing area of display panels, be rectangular a plurality of pixels that dispose.The first substrate SUB1 on the face of liquid crystal layer LC one side, a plurality of on-off elements, a plurality of pixel electrode of the multiple bar chart image signal line that is formed with the multi-strip scanning signal wire, intersects with the multi-strip scanning signal wire, for example thin film transistor (TFT) etc.In addition, one or more opposite electrode is formed on the face of liquid crystal layer LC one side of the first substrate SUB1 or the second substrate SUB2.Utilization is come the liquid crystal molecule of liquid crystal layer LC is driven and display image by the electric field that potential difference (PD) produced between pixel electrode and the opposite electrode.
In addition, display panels has the polaroid POL1 on the face of an opposite side with liquid crystal layer LC that is arranged on the first substrate SUB1 and is arranged on polaroid POL2 on the face of an opposite side with liquid crystal layer LC of the second substrate SUB2.In the present embodiment, the thickness of polaroid POL1 and polaroid POL2 is respectively 150 μ m, but is not limited thereto.
In the back side of display panels one side, dispose backlight BL with light source.
On the surface of observer's one side of display panels, be pasted with translucent cover COV via adhesive A DH.For example, as shown in Figure 2, at the back side of translucent cover COV one side adhesive-applying, make it bonding with display panels in a vacuum, then, the two solidifies adhesive A DH to utilize light or heat or light and heat.The thickness of adhesive A DH is on the part between translucent cover COV and the polaroid POL, and preferable range is 30～200 μ m, and more preferably scope is 30～100 μ m.In the present embodiment, for example adopting thickness is 50 μ m.As adhesive A DH, by adopt for example acrylic resin or epoxy resin etc., and translucent cover COV between the bonding agent of refractive index difference less (preferred index difference is below 0.2), can reduce unnecessary boundary reflection.
Translucent cover COV for example is made of transparent materials such as glass or acrylic resins, the effect of performance cover sheet.Thickness is preferably 0.5mm～2.5mm, and in the present embodiment, thickness is 1.8mm.Translucent cover COV such as Fig. 1, shown in Figure 3 have photomask BLK.The photomask BLK of this translucent cover COV has the window WD that exposes viewing area AR.Therefore, photomask BLK is in the outside of viewing area AR, forms the frame shape and surrounds viewing area AR.
As shown in Figure 2, display panels on one side, has the zone that the first substrate SUB1 protrudes in the second substrate SUB2 at least, and the driving circuit DRV that is made of semi-conductor chip etc. can be installed on this outstanding zone.In addition, can on this outstanding part, form and the outside terminal that is connected, can on this terminal, connect flexible circuit board FPC.And, also can cover the zone that this first substrate SUB1 protrudes in the second substrate SUB2 with translucent cover COV.At this moment, as shown in Figure 3, preferably make and the width of the photomask BLK of the translucent cover COV on regional corresponding limit that should be outstanding width greater than the photomask on other limits.
Fig. 1 is the cut-open view of the A-A ' line of corresponding diagram 3.In Fig. 1, it is the shape that the first substrate SUB1 protrudes in the second substrate SUB2, but be not limited thereto, on the limit beyond the limit that driving circuit DRV or flexible circuit board FPC are installed, the position of the end of the position of the end of the first substrate SUB1 and the second substrate SUB2 can be unanimous on the whole.This also is the same in the embodiment beyond the present embodiment.
In the present embodiment, as shown in Figure 1, the end that makes adhesive A DH is only from the end outreach d of polaroid POL2.Around the profile that the stretching out of this adhesive A DH spreaded all over polaroid POL2, all stretch out at the place on whole four limits.Thus, can cover the whole side of polaroid POL2 with adhesive A DH, near the caused demonstration that therefore can prevent to expand the end of polaroid POL2 illustrated in fig. 12, that caused by moisture is inhomogeneous.
But, when adhesive A DH is stretched out like this, then might be when bonding translucent cover COV and display panels during the occurrence positions skew, adhesive A DH takes place from the such problem of second substrate SUB2 drippage.
Therefore, can prevent adhesive A DH drippage by the flat shape of the periphery of adhesive A DH being made concaveconvex shape.Fig. 4, Fig. 5, Fig. 6 are the vertical views of an example of the flat shape of explanation bonding agent.Figure after Fig. 4, Fig. 5, Fig. 6 are equivalent to part upper right among Fig. 3 amplified.Therefore, corresponding with A-A ' line among Fig. 4, Fig. 5, Fig. 6 cut-open view is Fig. 1.
As Fig. 4, shown in Figure 5, the flat shape of the periphery of adhesive A DH is made concaveconvex shape, even exist unnecessary adhesive A DH also can to absorb when bonding finishing thus with the position of recess, compare with the situation that does not adopt concaveconvex shape as shown in Figure 6, can prevent adhesive A DH drippage.From near the caused uneven viewpoint that shows that expands the end of the polaroid POL2 that prevents to cause by moisture, the amount of exposing from the profile of polaroid POL2 as adhesive A DH apart from d, even preferred minimum place is also more than 0.1mm.
[embodiment 2]
Fig. 7 is the cut-open view of the embodiment 2 of explanation display device of the present invention.Fig. 7 is the cut-open view of the part corresponding with Fig. 1.The basic structure of embodiment 2 is identical with embodiment 1.The position of the end of polaroid POL2 as different from Example 1.
In Fig. 1 of the foregoing description 1, be that example is illustrated for situation with encapsulant SL position overlapped with the position of the end of polaroid POL2.But, exist under this situation and can't will obtain big such problem apart from d as the overhang of adhesive A DH.Therefore, in embodiment 2,, the end of polaroid POL2 is set than a side that is arranged on the more close viewing area AR of locational encapsulant SL that surrounds viewing area AR as present embodiment.
Thus, guarantee easily bigger apart from d.Therefore, even the adhesive A DH of the concaveconvex shape as shown in Fig. 4, Fig. 5 also can prevent the immersion of moisture reliably when preventing adhesive A DH drippage.
In addition, in the present embodiment as shown in Figure 6, also can adopt the flat shape of adhesive A DH not to be the such structure of concaveconvex shape.According to present embodiment,, also can guarantee fully from the end of adhesive A DH to the distance of the end (or end of translucent cover COV) of the second substrate SUB2 even increase to a certain extent apart from d.Therefore, even therefore occurrence positions skew when bonding translucent cover COV and display panels because tolerance limit (margin) is bigger, can prevent that adhesive A DH is from the such problem of second substrate SUB2 drippage.
[embodiment 3]
Fig. 8 is the cut-open view of the embodiment 3 of explanation display device of the present invention.Fig. 8 is the cut-open view of the B-B ' line of corresponding diagram 3.The basic structure of embodiment 3 is identical with embodiment 1 or embodiment 2, is that the center describes with the different part of structure therefore.
In the present embodiment, with illustrated the same among the embodiment 1, the first substrate SUB1 is equipped with driving circuit DRV on it protrudes in the zone of the second substrate SUB2.And translucent cover COV is configured to cover driving circuit DRV.But, be configured to cover under the situation of driving circuit DRV at translucent cover COV, when there is the space between, then when having pushed translucent cover COV, there is the possibility of such problem of breaking.
Therefore, in the present embodiment, as shown in Figure 8, between translucent cover COV and driving circuit DRV, also dispose adhesive A DH.Thus, can prevent such problem of when having pushed translucent cover COV, breaking.
Adhesive A DH also can be configured in the periphery of driving circuit DRV.In addition, also can be at the circumferential arrangement terminal protecting resin RES of driving circuit DRV.
Fig. 9 is the cut-open view of variation of the embodiment 3 of explanation display device of the present invention.Fig. 9 is the cut-open view of the part corresponding with Fig. 8.As shown in Figure 9, in the neighboring area of driving circuit DRV, can be following such state: adhesive A DH is formed point-like or wire or clathrate etc., and exist concavo-convex on the surface.In this case, though there is the space of a little, even under the situation of structure shown in Figure 9, such problem of breaking in the time of also can preventing to have pushed translucent cover COV.
[embodiment 4]
Figure 10 is the cut-open view of the embodiment 4 of explanation display device of the present invention.Figure 10 is the cut-open view of the B-B ' line of corresponding diagram 3.The basic structure of embodiment 4 is identical with embodiment 3 with embodiment 1, embodiment 2, is that the center describes with the different part of structure therefore.
Adopting ultraviolet hardening bonding agent for example, having the two the bonding agent etc. of character of thermohardening type and ultraviolet hardening and can make by the irradiation of light under the situation of bonding agent as adhesive A DH of its curing, there are the following problems: translucent cover COV with photomask BLK overlapping areas in, be difficult to make adhesive A DH fully to solidify.
Therefore, in the present embodiment, as shown in figure 10, in the photomask BLK of translucent cover COV, the place beyond window WD also is provided with opening OP.Thus, can to the overlapping part of opening OP with and the adhesive A DH irradiates light of periphery, therefore adhesive A DH is fully solidified.
In Figure 10, in the part of the wider width of the photomask BLK in Fig. 3, this problem is more remarkable, therefore on the photomask BLK on the limit of downside, opening OP is set, but be not limited thereto, on the less photomask BLK of the such width in upside, right side, left side that also can be in Fig. 3 opening OP be set.
Opening OP can be a figure arbitrarily such as point-like, wire, clathrate.
[embodiment 5]
In embodiment 1～4, can adopt touch panel as translucent cover COV.
More than, adopt embodiment 1～5 to describe the present invention, but illustrated structure is an example all the time in above each embodiment, the present invention can carry out suitable change in the scope that does not break away from its technological thought.In addition, the structure by each embodiment explanation also can be used in combination as long as do not conflict each other.
In addition, in embodiment 1～5, be that example is illustrated, but also the present invention can be applicable to the display device that has adopted display panels other forms of display panel in addition with the liquid crystal display device that has adopted display panels.
Claims (20)
1. display device comprises:
Display panels, this display panels have first substrate, be configured in than second substrate of more close observer's one side of above-mentioned first substrate and be clipped in above-mentioned first substrate and above-mentioned second substrate between liquid crystal layer; With
Translucent cover, this translucent cover are secured at by bonding agent on the surface of above-mentioned observer one side of above-mentioned display panels,
This display device is characterised in that:
Above-mentioned display panels has polaroid between above-mentioned second substrate and above-mentioned translucent cover,
Above-mentioned bonding agent is covered with the whole side of above-mentioned polaroid,
The flat shape of the periphery of above-mentioned bonding agent is a concaveconvex shape.
2. display device according to claim 1 is characterized in that:
The thickness range of the above-mentioned bonding agent between above-mentioned translucent cover and the above-mentioned polaroid is 30～200 μ m,
The amount that above-mentioned bonding agent exposes from the profile of above-mentioned polaroid is even in the place of minimum, also more than 0.1mm.
3. display device according to claim 1 is characterized in that:
The thickness range of the above-mentioned bonding agent between above-mentioned translucent cover and the above-mentioned polaroid is 30～100 μ m,
The amount that above-mentioned bonding agent exposes from the profile of above-mentioned polaroid is even in the place of minimum, also more than 0.1mm.
4. display device according to claim 1 is characterized in that:
Above-mentioned display panels is set on the position that surrounds the viewing area, and has the encapsulant of bonding above-mentioned first substrate and above-mentioned second substrate,
The end of above-mentioned polaroid and above-mentioned encapsulant are overlapping.
5. display device according to claim 1 is characterized in that:
Above-mentioned display panels is set on the position that surrounds the viewing area, and has the encapsulant of bonding above-mentioned first substrate and above-mentioned second substrate,
The end of above-mentioned polaroid is positioned at the side than the more close above-mentioned viewing area of above-mentioned encapsulant.
6. display device according to claim 1 is characterized in that:
Above-mentioned first substrate is equipped with driving circuit in the zone of stretching out from above-mentioned second substrate,
Above-mentioned translucent cover is covered with above-mentioned driving circuit,
Between above-mentioned translucent cover and above-mentioned driving circuit, also has above-mentioned bonding agent.
7. display device according to claim 1 is characterized in that:
Above-mentioned translucent cover has photomask being equipped with on the zone of above-mentioned driving circuit,
Above-mentioned bonding agent is the bonding agent that can make its curing by the irradiation of light,
Above-mentioned photomask has opening on the part in the zone that above-mentioned driving circuit is installed.
8. display device according to claim 1 is characterized in that:
Above-mentioned translucent cover has the function of touch panel.
9. display device comprises:
Display panels, this display panels have first substrate, be configured in than second substrate of more close observer's one side of above-mentioned first substrate and be clipped in above-mentioned first substrate and above-mentioned second substrate between liquid crystal layer; With
Translucent cover, this translucent cover are secured at by bonding agent on the surface of above-mentioned observer one side of above-mentioned display panels,
This display device is characterised in that:
Above-mentioned display panels has polaroid between above-mentioned second substrate and above-mentioned translucent cover,
Above-mentioned bonding agent is covered with the whole side of above-mentioned polaroid,
Above-mentioned first substrate is equipped with driving circuit in the zone of stretching out from above-mentioned second substrate,
Above-mentioned translucent cover is covered with above-mentioned driving circuit,
Between above-mentioned translucent cover and above-mentioned driving circuit, also has above-mentioned bonding agent.
10. display device according to claim 9 is characterized in that:
Above-mentioned translucent cover has photomask being equipped with on the zone of above-mentioned driving circuit,
Above-mentioned bonding agent is the bonding agent that can make its curing by the irradiation of light,
Above-mentioned photomask has opening on the part in the zone that above-mentioned driving circuit is installed.
11. display device according to claim 9 is characterized in that:
The flat shape of the periphery of above-mentioned bonding agent is a concaveconvex shape.
12. display device according to claim 9 is characterized in that,
The thickness range of the above-mentioned bonding agent between above-mentioned translucent cover and the above-mentioned polaroid is 30～200 μ m,
The amount that above-mentioned bonding agent exposes from the profile of above-mentioned polaroid is even in the place of minimum, also more than 0.1mm.
13. display device according to claim 9 is characterized in that,
The thickness range of the above-mentioned bonding agent between above-mentioned translucent cover and the above-mentioned polaroid is 30～100 μ m,
The amount that above-mentioned bonding agent exposes from the profile of above-mentioned polaroid is even in the place of minimum, also more than 0.1mm.
14. display device according to claim 9 is characterized in that:
Above-mentioned display panels is set on the position that surrounds the viewing area, and has the encapsulant of bonding above-mentioned first substrate and above-mentioned second substrate,
The end of above-mentioned polaroid and above-mentioned encapsulant are overlapping.
15. display device according to claim 9 is characterized in that,
Above-mentioned display panels is set on the position that surrounds the viewing area, and has the encapsulant of bonding above-mentioned first substrate and above-mentioned second substrate,
The end of above-mentioned polaroid is positioned at the side than the more close above-mentioned viewing area of above-mentioned encapsulant.
16. display device according to claim 9 is characterized in that:
Above-mentioned translucent cover has the function of touch panel.
17. a display device comprises:
Display panel; With
Be secured at the lip-deep translucent cover of observer's one side of above-mentioned display panel by bonding agent,
This display device is characterised in that:
Above-mentioned translucent cover has photomask,
Above-mentioned bonding agent is the bonding agent that can make its curing by the irradiation of light,
The above-mentioned photomask of above-mentioned translucent cover has the window of the viewing area of exposing above-mentioned display panel and is arranged on above-mentioned window locational opening in addition,
The above-mentioned opening of at least a portion of above-mentioned bonding agent and above-mentioned photomask is overlapping.
18. display device according to claim 17 is characterized in that:
Above-mentioned display panel at least on one side on driving circuit is installed,
Above-mentioned translucent cover is covered with above-mentioned driving circuit,
Between above-mentioned translucent cover and above-mentioned driving circuit, also there is above-mentioned bonding agent,
The above-mentioned photomask of an above-mentioned avris in the above-mentioned photomask of above-mentioned translucent cover, that above-mentioned driving circuit is installed has above-mentioned opening.
19. display device according to claim 17 is characterized in that:
Above-mentioned display panel is a display panels.
20. display device according to claim 17 is characterized in that:
Above-mentioned translucent cover has the function of touch panel.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
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| JP2007-236102 | 2007-09-12 | ||
| JP2007236102 | 2007-09-12 | ||
| JP2007236102A JP4494446B2 (en) | 2007-09-12 | 2007-09-12 | Display device |
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| Publication Number | Publication Date |
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| CN101387769A true CN101387769A (en) | 2009-03-18 |
| CN101387769B CN101387769B (en) | 2010-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008102131238A Active CN101387769B (en) | 2007-09-12 | 2008-09-12 | Display device |
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| Country | Link |
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| US (2) | US7903182B2 (en) |
| JP (1) | JP4494446B2 (en) |
| CN (1) | CN101387769B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101387769B (en) | 2010-12-29 |
| US7903182B2 (en) | 2011-03-08 |
| JP4494446B2 (en) | 2010-06-30 |
| US20090066862A1 (en) | 2009-03-12 |
| US20100157218A1 (en) | 2010-06-24 |
| JP2009069321A (en) | 2009-04-02 |
| US8004620B2 (en) | 2011-08-23 |
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